CN107304723A - The system and method for enabling the quantity of cylinder in the lift condition and adjustment engine that adjust valve actuator to improve fuel economy - Google Patents
The system and method for enabling the quantity of cylinder in the lift condition and adjustment engine that adjust valve actuator to improve fuel economy Download PDFInfo
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- CN107304723A CN107304723A CN201710207064.2A CN201710207064A CN107304723A CN 107304723 A CN107304723 A CN 107304723A CN 201710207064 A CN201710207064 A CN 201710207064A CN 107304723 A CN107304723 A CN 107304723A
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- engine
- valve
- lift
- cylinder
- lift condition
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/02—Cutting-out
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
- F02D13/0211—Variable control of intake and exhaust valves changing valve lift or valve lift and timing the change of valve timing is caused by the change in valve lift, i.e. both valve lift and timing are functionally related
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
- F01L2013/001—Deactivating cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D2041/001—Controlling intake air for engines with variable valve actuation
- F02D2041/0012—Controlling intake air for engines with variable valve actuation with selective deactivation of cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
A kind of system according to the disclosure includes cylinder deactivation module and valve lift control module.Cylinder deactivation module optionally disables the first cylinder of engine while the second cylinder of engine is in and enabled.When the first cylinder is deactivated, valve lift control module optionally adjusts the target lift condition of the valve actuator of engine to the first lift condition, so as to by the amount of at least one of the air bleeding valve of the intake valve of the second cylinder and the second cylinder lift first.Valve lift control module optionally adjusts the target lift condition of valve actuator to the second lift condition, so as to by the amount of at least one of intake valve and air bleeding valve lift second.First amount and the second amount are both greater than zero, and the second amount is more than the first amount.
Description
Technical field
This disclosure relates to be opened in internal combustion engine, the lift condition and adjustment engine that relate more specifically to adjust valve actuator
System and method with the quantity of cylinder to improve fuel economy.
Background technology
Background description provided herein is the background for substantially providing the disclosure.With regard to the journey described by background section
For degree, the work of the inventor currently signed, and may not yet be defined as when submitting each side of prior art and retouch
State, it is both no clearly or to be not impliedly recognized as pin prior art of this disclosure.
When the load capacity on engine is reduced, some engine control systems disable the cylinder of engine, to improve
Fuel economy.In one example, when starting function to produce enough moments of torsion, engine control system disables the pre- of engine
The cylinder of fixed number amount, to meet the acceleration demand of driver during cylinder deactivation.When engine can not produce enough moments of torsion again, hair
Motivation control system then reactivates the cylinder of deactivation, to meet the acceleration demand of driver during cylinder deactivation.
Some engine control systems are improved by the way that lift of a valve actuator is switched into low lift condition from high lift state
Fuel economy, to reduce the intake valve of cylinder from its valve seat by the amount of lift.In one example, it is sufficient when starting function to produce
During enough moments of torsion, lift of a valve actuator is switched to low lift condition by engine control system from high lift state, to meet valve liter
The acceleration demand of driver when journey actuator is in low lift condition.When engine can not produce enough moments of torsion again, engine
Lift of a valve actuator is then switched back into high lift state by control system, to meet the acceleration demand of driver.
The content of the invention
A kind of system according to the disclosure includes cylinder deactivation module and lift of a valve control module.When the second vapour of engine
When cylinder is enabled, cylinder deactivation module optionally disables the first cylinder of engine.When the first cylinder deactivation, lift of a valve control
The target lift condition of engine valve actuator is adjusted to the first lift condition, so as to by the second cylinder module selective
The amount of at least one of the air bleeding valve of intake valve and the second cylinder lift first.Lift of a valve control module optionally activates valve
The target lift condition of device is adjusted to the second lift condition, so as to by least one of intake valve and air bleeding valve lift second
Amount.First amount and the second amount are more than zero, and the second amount is more than the first amount.
By detailed description, claims and accompanying drawing, other suitable application areas of the disclosure will become obvious.In detail
Thin description and specific example are not intended to limit the scope of the present disclosure merely for purpose of illustration.
Brief description of the drawings
By the detailed description and the accompanying drawings, the disclosure will be easier to understand, wherein：
Fig. 1 is the functional block diagram of the example engine system of the principle according to the disclosure；
Fig. 2 is the functional block diagram of the example control system of the principle according to the disclosure；
Fig. 3 is the flow chart for showing the example control method according to the principle of the disclosure；
Fig. 4 is the curve map for showing the example intake ＆ exhaust valves lift profiles according to the principle of the disclosure；
Fig. 5 is to show to enable state and the example range of operation of valve-lift state for cylinder according to the principle of the disclosure
Curve map；
Fig. 6 be show when engine system cylinder enable between state and valve-lift state change when exhaust cam phaser
Example location curve map；And
Fig. 7 be show when engine system cylinder enable between state and valve-lift state change when inlet manifold in showing
The curve map of example pressure.
In the accompanying drawings, reference can be reused to identify similar and/or identical element.
Embodiment
By convention, the air inlet of cylinder or air bleeding valve are notable by the amount of lift when lift of a valve actuator is in low lift condition
Air inlet or air bleeding valve are by the amount of lift when being in high lift state less than lift of a valve actuator.In one example, the lift of a valve is worked as
When actuator is in low lift condition, intake valve is by 4 millimeters of lift (mm), when lift of a valve actuator is in high lift state,
Intake valve is by lift 10.5mm.Therefore, the amount for the moment of torsion that engine can be produced when lift of a valve actuator is in low lift condition
The amount for the moment of torsion that engine can be produced when being in high lift state significantly less than lift of a valve actuator.So, when engine
During cylinder deactivation, conventional engine control system does not switch to the lift of a valve actuator of engine from high lift state generally low
Lift condition, because so operation may cause engine stall.
The engine control system and method for a kind of principle according to the disclosure, so that the maximized side of fuel economy
Formula, is changed between valve-lift state and cylinder enable state, while avoiding the engine performance problem of such as engine stall.
In one example, when the load capacity on engine is less than first threshold, the system and method disable one in engine
Or multiple cylinders, and air inlet valve actuator is adjusted to low lift condition.In low lift condition, relative to conventional valve actuating
Device, air inlet valve actuator can be by the bigger amount of the air inlet lift of a valve.For example, in low lift condition, air inlet valve actuator will can enter
Valve lift 7.5mm.Therefore, when the cylinder deactivation of engine, air inlet valve actuator is adjusted to low lift condition and less may be used
Engine stall can be caused.
When engine loading is more than first threshold and is less than Second Threshold, the system and method, which are enabled in engine, to be owned
Cylinder, while air inlet valve actuator is maintained into low lift condition.When engine loading be more than Second Threshold when, the system and
Method adjusts air inlet valve actuator to high lift state, while all cylinders are maintained into the state of enabling.The system and side
Method can determine first threshold and Second Threshold based on the speed of engine.
The relation between relation and Second Threshold and engine speed between first threshold and engine speed can be pre-
Being set to maximizes fuel economy, while making valve timing adjustment minimum.In addition, when one or more cylinders of engine stop
Used time, the system and method can not adjust air inlet valve actuator to high lift state.The engine operation mode is avoided to enter
One step makes valve timing adjustment minimum, and maximizes fuel economy.
Referring now to Fig. 1, engine system 100 includes engine 102, the combustion air/fuel mixture of engine 102,
To produce the driving torque for vehicle.The amount of the driving torque produced by engine 102 is to be based on inputting mould from driver
Driver's input of block 104.Driver's input can the position based on accelerator pedal.Driver's input can also be based on cruise control
System, cruise control system can change car speed to maintain the adaptive cruise control system of predetermined vehicular gap.
Air is inhaled into inlet manifold 110 by choke valve 112.Only as an example, choke valve 112 may include have can revolve
The butterfly valve of rotating vane piece.The control choke valve of engine control module (ECM) 114 actuator module 116, choke valve actuator module
The unlatching of 116 regulation choke valves 112, with the amount for the air for controlling to suck inlet manifold 110.
Air from inlet manifold 110 is inhaled into the cylinder of engine 102.Although engine 102 may include multiple
Cylinder, but single representative cylinder 118 is shown for purposes of illustration.Only as an example, engine 102 may include 2,3,
4th, 5,6,8,10 and/or 12 cylinders.ECM114 can instruct cylinder actuator module 120 and optionally disable some cylinders, this
Fuel economy can be improved under specific engine operational conditions.
Four-stroke cycle can be used to run for engine 102.Four strokes described below are referred to alternatively as induction stroke, compression
Stroke, combustion stroke and exhaust stroke.During the rotation each time of bent axle (not shown), four strokes occur in cylinder 118
In two.So, cylinder 118 undergoes four all strokes, and it is necessary to have the rotation of bent axle twice.
During induction stroke, the air from inlet manifold 110 is inhaled into cylinder 118 by intake valve 122.ECM
114 control fuel actuator modules 124, fuel actuator module 124 adjusts the fuel injection carried out by fuel injector 125,
With the air/fuel ratio needed for acquisition.Fuel can middle position or in multiple positions (such as close to the intake valve of each cylinder
122) it is ejected into inlet manifold 110.(not shown) in various embodiments, fuel can be injected directly into cylinder or
Into the mixing chamber being connected with cylinder.Fuel actuator module 124 can stop the fuel injection to cylinder deactivation.
The fuel of injection is mixed with air, and generates air/fuel mixture in cylinder 118.During compression stroke,
Piston (not shown) compressed air/fuel mixture in cylinder 118.Spark actuator module 126 is based on from ECM's 114
Spark plug 128 in signal excitation cylinder 118, so lights air/fuel mixture.The timing of spark can be relative to piston
Time (being referred to as top dead centre (TDC)) at its topmost position and provide.
How long spark actuator module 126 can generate the timing signal control of spark before or after regulation TDC.Due to
Piston position is directly related to crank rotation, and the operation of spark actuator module 126 can be synchronous with crankshaft angles.Generating spark can
It is referred to as ignition event.Spark actuator module 126 can have the ability for changing spark timing for each ignition event.Work as spark
Timing is in upper once ignition event and when changing between ignition event next time, and spark actuator module 126 can be point next time
Fiery event changes spark timing.Spark actuator module 126 can stop the supply of spark, with cylinder deactivation.
During combustion stroke, the burning of air/fuel mixture drives piston away from TDC, so as to drive bent axle.Burning
Stroke can be defined as piston and reach the time of TDC and piston arrival lower dead center (BDC) between the time.During exhaust stroke,
Piston begins to move off BDC, and discharges the accessory substance burnt by air bleeding valve 130.The accessory substance of burning is via gas extraction system
134 discharge from vehicle.
Intake valve 122 is activated using air inlet valve actuator 136, and air bleeding valve 130 is caused using exhaust valve actuators 138
It is dynamic.Lift of a valve actuator module 139 can be based on signal control air inlet valve actuator 136 and exhaust valve actuation from ECM 114
Device 138.In various embodiments, multiple intake valves (including intake valve of cylinder 118 may be actuated in air inlet valve actuator 136
122).Similarly, multiple air bleeding valves (including air bleeding valve 130) of cylinder 118 may be actuated in exhaust valve actuators 138.In addition, single
One or more air bleeding valves of cylinder 118 and one or more intake valves of cylinder 118 may be actuated in valve actuator.Moreover, entering
Multiple intake valves of multiple cylinders may be actuated in air valve actuator 136, and multiple rows of multiple cylinders may be actuated in exhaust valve actuators 138
Air valve.
In various embodiments, air inlet valve actuator 136 can be driven by admission cam shaft 140, exhaust valve actuators 138
It can be driven by exhaust cam shaft 142.For example, air inlet valve actuator 136 may include rocking arm and be connected to the cam follower of rocking arm.
When cam follower engages the salient angle on admission cam shaft 140, rocking arm can be from the valve seat lift intake valve 122 of intake valve 122.
Similarly, exhaust valve actuators 138 may include rocking arm and be connected to the cam follower of rocking arm.When cam follower adjoining exhaust
During salient angle on camshaft 142, rocking arm can be from the valve seat lift air bleeding valve 130 of air bleeding valve 130.
In other embodiments, air inlet valve actuator 136 and exhaust valve actuators 138 can be activated independently of camshaft into
Air valve 122 and air bleeding valve 130.For example, intake valve 122 and air bleeding valve 130 can be electromagnetism or electro-hydraulic valve actuator.In these realities
Apply in mode, air inlet valve actuator 136 and exhaust valve actuators 138 are referred to alternatively as no cam valve actuator.
Air inlet valve actuator 136 and exhaust valve actuators 138 can change intake valve 122 and air bleeding valve 130 from each of which
Valve seat lift amount.For example, intake ＆ exhaust valves actuator 136 and 138 can be in the first lift condition and the second lift condition
Between switch.When being run in the first lift condition, air inlet valve actuator 136 and exhaust valve actuators 138 can cause intake valve
122 and air bleeding valve 130 from their own amount of valve seat lift first.When being run in the second lift condition, air inlet valve actuator
136 and exhaust valve actuators 138 can cause intake valve 122 and air bleeding valve 130 from their own amount of valve seat lift second.First
Amount and the second amount can be predetermined nonzero values.In addition, the second amount can be more than the first amount.Thus, the first lift condition can
It is referred to as low lift condition, the second lift condition is referred to alternatively as high lift state.
When air inlet valve actuator 136 and exhaust valve actuators 138 are actuated by cams, air inlet valve actuator 136 and exhaust
Each in valve actuator 138 may include cam follower, and there is cam follower adjustable height to change intake valve
122 and the lift of air bleeding valve 130.Alternatively, each in air inlet valve actuator 136 and exhaust valve actuators 13 may include
Solenoid, solenoid length translation cam axis cam section of one of them along along camshaft 140 and 142, so that cam follower
Engage the upper different salient angle of cam of camshaft section.Salient angle can have different height so that switch which salient angle and cam from
Moving part engages to change the lift of intake valve 122 and air bleeding valve 130.Such as these valve actuator is referred to alternatively as sliding cam cause
Dynamic device.
When air inlet valve actuator 136 and exhaust valve actuators 138 are without cam valve actuator, valve actuator 136 and 138
The timing of intake valve 122 and air bleeding valve 130 can be also adjusted respectively.When air inlet valve actuator 136 and exhaust valve actuators 138 are convex
During wheel drive, the timing of intake valve 122 and air bleeding valve 130 can be respectively by exhaust cam phaser 148 and exhaust cam phaser
150 adjustment.Phaser actuator module 158 can be based on the signal adjustment exhaust cam phaser 148 received from ECM 114 and row
The position of gas cam phaser 148.
Cylinder actuator module 120 can cause intake valve 122 and/or exhaust by instruction valve lift actuator module 139
Valve 130 can not be opened and cylinder deactivation 118.When air inlet valve actuator 136 is actuated by cams, air inlet valve actuator 136 can lead to
Crossing to separate intake valve 122 from admission cam shaft 140 causes intake valve 122 from opening.Similarly, exhaust valve actuators are worked as
138 be actuated by cams when, exhaust valve actuators 138 can be by the way that air bleeding valve 130 be separated from exhaust cam shaft 142 so that air bleeding valve
130 can not open.
In each embodiment, lift of a valve actuator module 139 can be by the way that air inlet valve actuator 136 and air bleeding valve be caused
Dynamic device 138 switches to the 3rd lift condition prevent intake valve 122 and air bleeding valve 130 are from opening.When in the 3rd lift condition fortune
During row, air inlet valve actuator 136 and exhaust valve actuators 138 can be by intake valve 122 and air bleeding valves 130 from their own valve seat
The amount of lift the 3rd.3rd amount can be zero.Therefore, the 3rd lift condition is referred to alternatively as zero-lift state.
Engine system 100 may include turbocharger, and turbocharger includes the thermal exhaust by flowing through gas extraction system 134
The heat turbine 160-1 of power is provided.Turbocharger also includes the cold air compressor 160-2 driven by turbine 160-1.
Compressor 160-2 compresses the air for leading to choke valve 112.In each embodiment, (do not shown by bent shaft-driven booster
Go out) air from choke valve 112 can be compressed and the air of compression is delivered to inlet manifold 110.
Exhaust gas by-pass valve 162 may be such that exhaust bypasses turbine 160-1, thus reduce the supercharging provided by turbocharger
(air inlet decrement).Boost actuator module 164 can be by controlling the unlatching of exhaust gas by-pass valve 162 to control turbocharger
Supercharging.In each embodiment, it can be implemented by boost actuator module 164 and control two or more turbochargings
Device.
Aerial cooler (not shown) can be by heat from the air charge of compression is transferred to cooling medium, such as engine
Cooling agent or air.The aerial cooler for cooling down compressed air charge using engine coolant is referred to alternatively as intercooler.
The aerial cooler for cooling down compressed air charge using air is referred to alternatively as charger-air cooler.For example, compressed air charge
Heat can be received via compression and/or from the part of gas extraction system 134.Although for illustration purposes it is separately depicted, but turbine
Machine 160-1 and compressor 160-2 can be connected to each other, and air inlet is placed near thermal exhaust.
Engine system 100 may include exhaust gas recirculatioon (EGR) valve 170, and exhaust is optionally led back to air inlet by it again
Manifold 110.EGR valve 170 can be located at turbine 160-1 upstream.EGR valve 170 can be based on the signal from ECM 114 by EGR
Actuator module 172 is controlled.
Crank position (CKP) sensor 180 can be used to measure for the position of bent axle.The rotating speed (engine speed) of bent axle can base
Determined in crank position.Engine coolant temperature (ECT) sensor 182 can be used to survey for the temperature of engine coolant
Amount.The other positions that ECT sensor 182 can be located in engine 102 or be circulated in cooling agent, such as radiator (not shown).
Manifold absolute pressure (MAP) sensor 184 can be used to measure for pressure in inlet manifold 110.In each implementation
In mode, measurable engine vacuum, engine vacuum is the difference of pressure in environmental air pressure and inlet manifold 110.
Quality air stream (MAF) sensor 186 can be used to measure for the air mass flow rate for flowing into inlet manifold 110.In each implementation
In mode, maf sensor 186 can be located in the also housing including choke valve 112.
One or more throttle valve position sensors (TPS) 190 can be used to monitor throttling for choke valve actuator module 116
The position of valve 112.Intake air temperature (IAT) sensor 192 can be used to measure for the temperature for being inhaled into the air of engine 102.ECM
114 the signal from sensor can be used to be that engine system 100 makes control decision.
ECM 114 can communicate with coordinating the gear shift (not shown) in speed changer with transmission control module 194.For example, ECM
114 can reduce engine torque during gear shift.ECM 114 can communicate with mixing control module 196, to coordinate engine 102
With the operation of electro-motor 198.Electro-motor 198 also acts as generator, and available for generation electric energy, for vehicle electrical system
The use of system and/or for the storage in battery.In each embodiment, ECM 114, transmission control module 194 and mixed
One or more modules can be integrated to by closing the various functions of control module 196.
Each system for changing engine parameter can be referred to as engine actuators.For example, choke valve actuator module 116
The unlatching of choke valve 112 is can adjust to reach target throttle valve open area.Spark actuator module 126 control spark plug with up to
To the target spark timing relative to piston TDC.Fuel actuator module 124 controls fuel injector to reach that desired fuel adds
Note parameter.Lift of a valve actuator module 139 controls air inlet valve actuator 136 and exhaust valve actuators 138 to reach target lift
State.Phaser actuator module 158 can control exhaust cam phaser 148 and exhaust cam phaser 150 to respectively reach
Target inlet air cam phaser angle and exhaust cam phaser angle.EGR actuator module 172 can control EGR valve 170 with up to
To target EGR open areas.Boost actuator module 164 controls exhaust gas by-pass valve 162 to reach that Target exhaust by-passing valve is opened
Area.Cylinder actuator module 120 control cylinder deactivation with reach enable or cylinder deactivation destination number.
Referring now to Fig. 2, ECM 114 illustrative embodiments include engine speed module 202, expect torque module
204th, airflow module 206 and engine load module 208 are expected.Engine speed module 202 is based on coming from CKP sensors
180 crank position and the speed for determining engine 102.For example, engine speed module 202 can based on bent axle complete one or
The time of multiple rotations calculates engine speed.The output engine speed of engine speed module 202.
It is expected that torque module 204 inputs to determine the phase of engine 102 based on the driver from driver input module 104
The output of prestige.It is expected that torque module 204 can store accelerator pedal position, car speed and TR to expecting moment of torsion
One or more mappings, and desired torque output can be determined based on a selected mapping.It is expected that torque module 204 can
Car speed and TR are received from transmission control module 194.It is expected that torque module 204 exports desired moment of torsion defeated
Go out.
Expect airflow module 206 based on desired torque output and engine speed to determine to enter the cylinder of engine 102
Desired air quantity.For example, it is desirable to which airflow module 206 can be used torque output and engine speed with it is expected that air-flow is associated
The function that gets up and/or mapping determine to expect air-flow.It is expected that airflow module 206 can be by enabling cylinder in engine 102
Quantity come distribute expect air-flow with obtain into engine 102 each cylinder expectation throughput, it is referred to alternatively as each
The expectation air (APC) of cylinder.It is expected that air-flow is expected in the output of airflow module 206.
Engine load module 208 determines the load capacity on engine 102.Engine load module 208 can be based on expectation
Air-flow determines engine loading using the function and/or mapping that for example associate expectation air-flow with engine loading.
In each embodiment, replacement determines engine loading based on air-flow is expected or except determining engine based on air-flow is expected
Outside load, engine load module 208 can determine engine loading based on manifold pressure is expected.Engine load module 208
Output engine is loaded.
The ECM 114 shown in Fig. 2 illustrative embodiments further comprise throttle control module 210, fuel control
Molding block 212, spark control module 214, lift of a valve control module 216, valve timing control module 218 and cylinder deactivation module
220.Throttle control module 210 exports desired throttle valve position, the adjustment choke valve 112 of choke valve actuator module 116
Position is to reach desired throttle valve position.Fuel control module 212 exports desired refueling rate, fuel actuator mould
Block 124 controls fuel injector 125 to reach desired refueling rate.Fuel control module 212 is also exportable desired
Injection timing, in this case, fuel actuator module 124 also can control fuel injector 125 to reach desired injection just
When.Spark control module 214 exports desired spark timing, and spark actuator module 126 controls spark plug 128 to reach expectation
Spark timing.
Throttle control module 210, fuel control module 212 and spark control module 214 can adjust choke valve position respectively
Put, refueling rate and spark timing to be to reach desired torque output.In one example, throttle control module 210
Desired torque output, which is based on, with spark control module 214 adjusts throttle valve position and spark timing, the base of fuel control module 212
Refueling rate is adjusted in desired air/fuel ratio.More specifically, fuel control module 212 can determine that desired fuel
Speed is filled to minimize the difference of desired air/fuel ratio and measured air/fuel ratio.In each embodiment,
Throttle control module 210 can adjust throttle valve position based on desired air-flow, and replacement is directly based upon expectation torque output and come
Adjust throttle valve position.
Lift of a valve control module 216 exports target lift condition, and lift of a valve actuator module 139 is by air inlet valve actuator
136 and the lift conditions of exhaust valve actuators 138 adjust to target lift condition.As discussed below, lift of a valve control
Molding block 216 can be based on engine speed and/or engine loading adjustment target lift condition.Valve timing control module 218 is defeated
Go out target lift condition.In each embodiment, lift of a valve control module 216 can be air intake-exhaust valve actuator 136 and row
In air valve actuator 138 each and export target lift condition, independently to control air inlet valve actuator 136 and air bleeding valve
The lift condition of actuator 138.
Valve timing control module 218 exports target valve timing, the adjustment exhaust cam phaser of phaser actuator module 158
148 and exhaust cam phaser 150 position to reach target valve timing.Target valve timing may include in the song relative to TDC
Target valve opening time, target valve open duration and/or target valve closing time specified in handle angle.Caused in intake valve
During dynamic device 136 and exhaust valve actuators 138 are the embodiment without cam valve actuator, valve timing control module 218 is to valve liter
Journey actuator module 139 exports target valve timing.In turn, the He of the adjustment air inlet of lift of a valve actuator module 139 valve actuator 136
The position of exhaust valve actuators 138 is to reach target valve timing.
As discussed below, cylinder deactivation module 220 is based on engine loading and/or engine speed selectivity
Ground disables one or more of engine 102 cylinder.Cylinder is enabled in the output indication engine 102 of cylinder deactivation module 220
Quantity and/or which cylinder deactivation signal.Fuel control module 212 can stop the fuel conveying to cylinder deactivation.Spark
The spark generation that control module 214 can be stopped in cylinder deactivation.Lift of a valve control module 216 may be such that to be associated with cylinder deactivation
Intake valve 122 and air bleeding valve 130 can not open.As it appears from the above, lift of a valve control module 216 can be by by air inlet valve actuator
136 and exhaust valve actuators 138 switch to the 3rd lift condition (or zero-lift state) cause intake valve 122 and air bleeding valve 130
It can not open.
It is a kind of to be used to adjust the lift condition of valve actuator and cylinder is enabled in engine for adjusting referring now to Fig. 3
Quantity start from 302 with the illustrative methods for improving fuel economy.In the exemplary embodiment party of the ECM 114 shown in Fig. 2
This method is described in the background for the module that formula includes.However, carry out this method the step of particular module may differ from
The module and/or this method of lower description can be implemented outside Fig. 2 module.
Fig. 3 method switches the target lift condition of intake valve actuator 136 between first state and the second state, together
When the target lift condition of exhaust valve actuators 138 is maintained into the second lift condition.When air inlet valve actuator 136 is adjusted to
Fuel warp can be improved by adjusting the target lift condition of exhaust valve actuators 138 to the first lift condition during the first lift condition
Ji property.Therefore, in order to eliminate the hardware and calibration amount needed for multiple non-zero-lift states, this method can be activated in intake valve
Device 136 is adjusted to not adjusted the target lift condition of exhaust valve actuators 138 to the first lift condition during the first lift condition.
However, in various embodiments, this method can be identical according to the target lift condition that air inlet valve actuator 136 is adjusted with this method
Mode adjust the target lift condition of exhaust valve actuators 138.
304, lift of a valve control module 216 and/or cylinder deactivation module 220 determine whether engine speed is less than first
Speed.First Speed can be predetermined speed, such as 3000 revs/min (RPM)., should if engine speed is less than First Speed
Method continues 306.Otherwise, this method continues 308.308, cylinder deactivation module 220 enables all in engine 102
Cylinder.310, lift of a valve control module 216 adjusts the target lift condition of air inlet valve actuator 136 to the second lift shape
State.
306, lift of a valve control module 216 and/or cylinder deactivation module 220 determine the first load based on engine speed
With the second load.As discussed below, the first load and the second load can be respectively by the He of lift of a valve control module 216
Cylinder deactivation module 220 uses to determine the threshold value for the target lift condition for enabling number of cylinders.Lift of a valve control module 216
And/or cylinder deactivation module 220 can be used by engine speed and the first load and second load the function that associates and/or
Map to determine the first load and the second load.
312, lift of a valve control module 216 and/or cylinder deactivation module 220 determine whether engine loading is less than first
Load.If engine loading is less than the first load, this method continues 314.Otherwise, this method continues 316.
314, cylinder deactivation module 220 disables hair while at least one cylinder of engine 102 is remained and enabled
One or more cylinders of motivation 102.For example, if engine 102 has four cylinders, cylinder deactivation module 220 can be many
Individual cycle of engine disables two in four cylinders, while other two cylinders are then remained and enabled.Cycle of engine is responded
In the once execution of the ignition order of engine 102, no matter whether each cylinder is to enable in ignition order.In four strokes hair
In motivation, cycle of engine rotates in response to 720 degree of bent axle.318, lift of a valve control module 216 is by air inlet valve actuator
136 target lift condition is adjusted to the second lift condition.
316, cylinder deactivation module 220 enables all cylinders in engine 102.In 320, lift of a valve control module
216 and/or cylinder deactivation module 220 determine engine loading whether be more than second load.If it is negative that engine loading is more than second
Carry, this method continues 322.Otherwise, this method continues 324.
322, lift of a valve control module 216 adjusts the target lift condition of air inlet valve actuator 136 to the second lift
State.At 324, lift of a valve control module 216 adjusts the target lift condition of air inlet valve actuator 136 to the first lift shape
State.If air inlet valve actuator 136 is in the first lift condition, lift of a valve control module 216 only can cause intake valve
The target lift condition of dynamic device 136 maintains the first lift condition.
Referring now to Fig. 4, curve map 400 is shown with the exhaust valve actuators 138 in the second state, in first state
Air inlet valve actuator 136 and the corresponding lift of a valve distribution map of air inlet valve actuator in the second state example.Valve
Lift profiles are relative to the x-axis 402 and the y-axis of the expression lift of a valve (unit is millimeter) for representing degree in crank angle (unit is degree)
404 and draw.The lift of a valve distribution map corresponding with the exhaust valve actuators 138 in the second state is marked as 406.With
The corresponding lift of a valve distribution map of air inlet valve actuator 136 in first state is marked as 408.With in the second state
The corresponding lift of a valve distribution map of air inlet valve actuator 136 is marked as 410.
Referring now to Fig. 5, curve map 500 shows that various cylinders enable state and the range of operation of valve-lift state.Operation
Scope is relative to the x-axis 502 for representing engine speed (unit is RPM) and represents that (unit is brake mean-effective pressure
Bar y-axis 504) and draw.Brake mean-effective pressure can be zoomed to moment of torsion by y-axis 504 by using engine displacement
Export and be converted to engine loading.
Range of operation includes the first range of operation 506, the second range of operation 508 and the 3rd range of operation 510.First fortune
Line range 506 is limited by the first load boundary 512 and engine speed border 514.In other words, when engine loading is less than first
When load boundary 512 and engine speed are less than engine speed border 514, engine system 100 is in the first range of operation 506
Interior operation.First load boundary 512 may correspond to the first load discussed above with reference to Fig. 3, and engine speed border 514 can be right
The First Speed that Ying Yu is discussed above with reference to Fig. 3.
Second range of operation 508 is by the first load boundary 512, the second load boundary 516 and engine speed border 514
Limit.When engine loading is more than the first load boundary 512 and less than the second load boundary 516, and engine speed is less than hair
During motivation speed edges 514, engine system 100 is run in the second range of operation 508.Second load boundary 516 can be corresponded to
In the second load discussed above with reference to Fig. 3.
3rd range of operation 510 is by the second load boundary 516 and engine speed borders.When engine loading is more than
During the second load boundary 516 and/or when engine speed is more than engine speed border 514, engine system 100 is the 3rd
Run in range of operation 510.Engine system 100 can generally be run in the 4th range of operation 518, the wherein the 4th operation model
Enclose overlapping with the first range of operation 506, the second range of operation 508 and the 3rd range of operation 510.
When engine system 100 is run in the first range of operation 506, lift of a valve control module 216 causes intake valve
The target lift condition of dynamic device 136 is adjusted to the first lift condition.In addition, cylinder deactivation module 220 disables the one of engine 102
Individual or multiple cylinders.For example, if engine 102 has four cylinders, cylinder deactivation module 220 can be multiple cycle of engine
Two in four cylinders are disabled, while other two cylinders keep enabling.
When engine system 100 is run in the second range of operation 508, lift of a valve control module 216 is by intake valve liter
The target lift condition of journey actuator 136 is adjusted to the first lift condition.In addition, cylinder deactivation module 220 enables engine 102
In all cylinders.When engine system 100 is run in the 3rd range of operation 510, lift of a valve control module 216 is by air inlet
The target lift condition of valve actuator 136 is adjusted to the second lift condition.In addition, cylinder deactivation module 220 enables engine 102
In all cylinders.
When engine system 100 is changed between the first range of operation 506 and the second range of operation 508, lift of a valve control
The target lift condition of air inlet valve actuator 136 only can be maintained the first lift condition by molding block 216.Work as engine system
100 between the second range of operation 508 and the 3rd range of operation 510 when changing, and cylinder deactivation module 220 can be only by engine
All cylinders in 102 maintain the state of enabling.It is worth noting that, when one or more cylinders of engine 102 are deactivated
When, lift of a valve control module 216 can't adjust the target lift condition of air inlet valve actuator 136 to the second lift condition.
Cylinder is so caused to enable turning between conversion times and the first valve-lift state and the second valve-lift state between state
Number of times minimum is changed, this makes valve timing adjustment minimum, and thus improves fuel economy.
Referring now to Fig. 6, curve map 600 shows that the conversion of engine system 100 is transported by the first range of operation 506, second
The Angle Position of exhaust cam phaser 148 when line range 508 and three ranges of operation 510.Various contour lines 602 represent air inlet
The Angle Position of cam phaser 148 (unit is degree).Significantly, since cylinder deactivation module 220 can't start
Adjustment enables the quantity of cylinder when machine system 100 is changed between the second range of operation 506 and the 3rd range of operation 508, therefore
The Angle Position change of exhaust cam phaser 148 is minimum.
Referring now to Fig. 7, curve map 700 shows that the conversion of engine system 100 is transported by the first range of operation 506, second
Pressure when line range 508 and three ranges of operation 510 in inlet manifold 110.Various contour lines 702 represent inlet manifold
Pressure in 110 (unit is kPa (kPa)).Significantly, since the first load boundary 512 and the second load boundary
516 selection, when engine system 100 is in the first range of operation 506, the second range of operation 508 and the 3rd range of operation 510
Between when changing, minimum change can occur for manifold pressure.
Therefore, the first load boundary 512 and the second load boundary 516 can be chosen (for example, by calibration) starting
It is minimum when machine system 100 is changed between the first range of operation 506, the second range of operation 508 and the 3rd range of operation 510
Change the change of manifold pressure.In addition, the first load boundary 512 is selectable in engine system 100 in the first range of operation
506 and second when changing between range of operation 508, minimize the variable quantity of the braking specific fuel consumption of engine 102.It is similar
Ground, the second load boundary 516 is selectable in engine system 100 in the second range of operation 508 and the 3rd range of operation 510
Between when changing, minimize the variable quantity of the braking specific fuel consumption of engine 102.
What foregoing description was substantially merely exemplary, it, which is determined, is not intended to limit the disclosure and its application or purposes.This public affairs
The extensive teaching opened can be implemented by various forms.Therefore, although the disclosure includes particular example, but the disclosure is true
Scope should not be limited to this, because after accompanying drawing, specification and appended claims have been studied carefully, other modifications will become
Obtain obviously.Phrase used herein " in A, B and C at least one " should be interpreted to represent using nonexcludability logic or
(OR) logic (A, B or C), and it is not construed as representing " at least one in A, at least one in B and C
At least one ".It should be understood that in the case where not changing the principle of the disclosure, the one or more steps in method can
Performed with (or simultaneously) in a different order.
In this application, including hereinafter definition, term " module " or term " controller " can be taken by term " circuit "
Generation.Term " module " may refer to or including the following, or can be a following part：Application specific integrated circuit (ASIC)；
Numeral, simulation or hybrid analog-digital simulation/Digital Discrete circuit；Numeral, simulation or hybrid analog-digital simulation/digital integrated electronic circuit；Combinational logic electricity
Road；Field programmable gate array (FPGA)；Perform the processor circuit (shared, special or cluster) of code；Storage is by processor
The memory circuitry (shared, special or cluster) for the code that circuit is performed；Other suitably provide the hardware component of the function；
Or some or all of combination in above-mentioned item, for example, in on-chip system.
Module may include one or more interface circuits.In some instances, interface circuit may include to be connected to LAN
(LAN), the wired or wireless interface of internet, wide area network (WAN) or its combination.The function of any given module of the disclosure can
It is allocated between multiple modules connected via interface circuit.For example, multiple modules can allow load balance.Further
Example in, server (also known as long-range or cloud) module can represent client modules and realize some functions.
Term " code " used above may include software, firmware and/or microcode, and may refer to program, routine, function, class,
Data structure and/or object.Term " common processor circuit " includes performing some or all codes from multiple modules
Single processor circuit.Term " clustered processors circuit " includes being combined to perform from one or many with other processor circuits
The processor circuit of some or all codes of individual module.The references of multiple processor circuits is included multiple on discrete tube core
Multiple cores of multiple processor circuits, single processor circuit on processor circuit, singulated dies, single processor circuit
Multiple threads or above-mentioned item combination.Term " common storage circuit " includes some or all of storage from multiple modules
The single memory circuit of code.Term " cluster memory circuit " include with other memory combinations storing from one or
The memory circuitry of some or all codes of multiple modules.
Term " memory circuitry " is the subset of term " computer-readable medium ".Terms used herein is " computer-readable
Medium " does not include instantaneous electricity or the electromagnetic signal propagated by medium (for example, on carrier wave)；Therefore, " computer can for term
Read medium " can be considered as tangible and non-momentary.The non-limiting example of non-momentary tangible computer computer-readable recording medium is non-easy
The property lost memory circuitry is (for example, flash memory circuit, Erasable Programmable Read Only Memory EPROM circuit or mask ROM
Circuit), volatile memory circuit (for example, static random access memorizer circuit or dynamic RAM circuit),
Magnetic storage medium (for example, analog or digital tape or hard disk drive) and optical storage media are (for example, CD, DVD or blue light light
Dish).
Apparatus and method described herein can partially or completely be implemented by special-purpose computer, wherein, by with
Putting all-purpose computer makes it perform one or more specific functions included in computer program to obtain the special-purpose computer.
Above-mentioned functions block, flow chart composition and other key elements are used as software specifications, wherein, the normal of technical staff or programmer can be passed through
The software specifications are converted into computer program by rule work.
The processor that computer program includes being stored at least one non-momentary tangible computer computer-readable recording medium can perform
Instruction.Computer program may also include or dependent on the data stored.Computer program may include hard with special-purpose computer
Part interaction basic input/output (BIOS), interacted with the specific device of special-purpose computer device driver, one or
Multiple operating systems, user application, background service, background application etc..
Computer program may include：(i) descriptive text to be resolved, for example, HTML (HTML) or XML
(extensible markup language)；(ii) assembly code；(iii) object code generated by compiler from source code；(iv) by solving
Release the source code of device execution；(v) source code for being compiled and being performed by instant compiler etc..Only as an example, source code can make
Write with the grammer of various language, these language include：C、C++、C#、Objective C、Haskell、Go、SQL、R、Lisp、Fortran、Perl、Pascal、Curl、OCaml、HTML5, Ada, ASP (dynamic server page
Face), PHP, Scala, Eiffel, Smalltalk, Erlang, Ruby,VisualLua and
According to 35U.S.C. § 112 (f) regulation, wanted except non-usage phrase " device being used for ... " or in method right
Using phrase " operation being used for ... " or " the step of being used for ... " it is manifestly intended that key element, otherwise right will in the case of asking
No one of key element described in book is asked to be intended to be device+functional imperative.
Claims (10)
1. a kind of method, it includes：
While the second cylinder of engine is in and enables state, the first cylinder of the engine is optionally disabled；
When first cylinder is deactivated, optionally the target lift condition of the valve actuator of the engine is adjusted
To the first lift condition, so as to which at least one of air bleeding valve of the intake valve of second cylinder and second cylinder is risen
The amount of journey first；And
Optionally the target lift condition of the valve actuator is adjusted to the second lift condition, so as to by described
At least one of described air bleeding valve of the intake valve of two cylinders and second cylinder amount of lift second, wherein described
One amount and second amount are both greater than zero, and second amount is more than first amount.
2. according to the method described in claim 1, it further comprises：
When the load on the engine is less than the first load, first cylinder is optionally disabled；And
When the engine loading is less than the described first load, optionally by the target lift of the valve actuator
State is adjusted to first lift condition.
3. method according to claim 2, it further comprises that the speed based on the engine determines that described first is negative
Carry.
4. method according to claim 2, it further comprises：
When the engine loading is less than the speed of the described first load and the engine less than First Speed, disable described
First cylinder；And
, will be described when the engine loading is less than the described first load and the engine speed is less than the First Speed
The target lift condition of valve actuator is adjusted to first lift condition.
5. method according to claim 4, it further comprises：
When the engine speed is more than the First Speed, all cylinders of the engine are enabled；And
When the engine speed is more than the First Speed, the target lift condition of the valve actuator is adjusted
To second lift condition.
6. method according to claim 4, it further comprises：
When the engine loading is more than the described first load, all cylinders of the engine are enabled；And
When the engine loading is more than the described first load and is loaded less than second, optionally by the valve actuator
The target lift condition maintain first lift condition, wherein it is described second load be more than described first load.
7. method according to claim 6, it further comprises described in the valve actuator in the case where there
Target lift condition maintains first lift condition：
The engine loading is more than described first and loaded and less than the described second load；And
The engine speed is less than the First Speed.
8. method according to claim 6, it further comprises：
When the engine loading is more than the described second load, continue to enable all cylinders of the engine；And
When the engine loading is more than the described second load, the target lift condition of the valve actuator is adjusted
To second lift condition.
9. according to the method described in claim 1, its described target lift shape for further comprising adjusting the valve actuator
State, to adjust the intake valve of second cylinder by the amount of lift.
10. according to the method described in claim 1, it further comprises when at least one cylinder of the engine is deactivated
When, the target lift condition of the valve actuator is not adjusted to second lift condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/133582 | 2016-04-20 | ||
| US15/133,582 US9879616B2 (en) | 2016-04-20 | 2016-04-20 | System and method for adjusting the lift state of a valve actuator and for adjusting the number of active cylinders in an engine to improve fuel economy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107304723A true CN107304723A (en) | 2017-10-31 |
| CN107304723B CN107304723B (en) | 2020-08-18 |
Family
ID=60021063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710207064.2A Expired - Fee Related CN107304723B (en) | 2016-04-20 | 2017-03-31 | System and method for adjusting lift state of valve actuator |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9879616B2 (en) |
| CN (1) | CN107304723B (en) |
| DE (1) | DE102017108122A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318889A (en) * | 2018-03-28 | 2019-10-11 | 通用汽车环球科技运作有限责任公司 | Hydraulic system removing is carried out by the synchronous electromagnetic pulse in position |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9399964B2 (en) | 2014-11-10 | 2016-07-26 | Tula Technology, Inc. | Multi-level skip fire |
| US10400691B2 (en) | 2013-10-09 | 2019-09-03 | Tula Technology, Inc. | Noise/vibration reduction control |
| US10662883B2 (en) | 2014-05-12 | 2020-05-26 | Tula Technology, Inc. | Internal combustion engine air charge control |
| GB2563393B (en) * | 2017-06-12 | 2020-08-05 | Jaguar Land Rover Ltd | Controlling an air charge provided to an engine |
| WO2020119951A1 (en) * | 2018-12-14 | 2020-06-18 | Eaton Intelligent Power Limited | Diesel engine cylinder deactivation modes |
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| US20060037578A1 (en) * | 2004-08-20 | 2006-02-23 | Hitachi, Ltd. | Cylinder cutoff control apparatus of internal combustion engine |
| US20090007866A1 (en) * | 2007-07-04 | 2009-01-08 | Hitachi, Ltd. | Control apparatus for internal combustion engine and control method therefor |
| CN102383959A (en) * | 2010-07-28 | 2012-03-21 | 通用汽车环球科技运作有限责任公司 | Increased fuel economy mode control systems and methods |
| JP2015105627A (en) * | 2013-12-02 | 2015-06-08 | 日立オートモティブシステムズ株式会社 | Variable valve device of multi-cylinder internal combustion engine and controller for variable valve device |
| CN104727883A (en) * | 2013-12-19 | 2015-06-24 | 现代自动车株式会社 | Control apparatus of engine having variable valve lift apparatus and a method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9488078B2 (en) * | 2014-06-27 | 2016-11-08 | GM Global Technology Operations LLC | Valve lift control systems and methods for engine startability |
-
2016
- 2016-04-20 US US15/133,582 patent/US9879616B2/en not_active Expired - Fee Related
-
2017
- 2017-03-31 CN CN201710207064.2A patent/CN107304723B/en not_active Expired - Fee Related
- 2017-04-13 DE DE102017108122.4A patent/DE102017108122A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060037578A1 (en) * | 2004-08-20 | 2006-02-23 | Hitachi, Ltd. | Cylinder cutoff control apparatus of internal combustion engine |
| US20090007866A1 (en) * | 2007-07-04 | 2009-01-08 | Hitachi, Ltd. | Control apparatus for internal combustion engine and control method therefor |
| CN102383959A (en) * | 2010-07-28 | 2012-03-21 | 通用汽车环球科技运作有限责任公司 | Increased fuel economy mode control systems and methods |
| JP2015105627A (en) * | 2013-12-02 | 2015-06-08 | 日立オートモティブシステムズ株式会社 | Variable valve device of multi-cylinder internal combustion engine and controller for variable valve device |
| CN104727883A (en) * | 2013-12-19 | 2015-06-24 | 现代自动车株式会社 | Control apparatus of engine having variable valve lift apparatus and a method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318889A (en) * | 2018-03-28 | 2019-10-11 | 通用汽车环球科技运作有限责任公司 | Hydraulic system removing is carried out by the synchronous electromagnetic pulse in position |
| CN110318889B (en) * | 2018-03-28 | 2022-06-07 | 通用汽车环球科技运作有限责任公司 | Variable displacement internal combustion engine control system |
Also Published As
| Publication number | Publication date |
|---|---|
| US9879616B2 (en) | 2018-01-30 |
| DE102017108122A1 (en) | 2017-10-26 |
| CN107304723B (en) | 2020-08-18 |
| US20170306859A1 (en) | 2017-10-26 |
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